ASTM A955/A955M : 17a

Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement

Standard Details

1.1 This specification covers deformed and plain stainless-steel bars for concrete reinforcement in cut lengths and coils used in applications requiring resistance to corrosion or controlled magnetic permeability. The standard sizes and dimensions of deformed bars and their numerical designation shall be those listed in Table 1. The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.

TABLE 1 Deformed Bar Designation Numbers, Nominal Weights [Masses], Nominal Dimensions, and Deformation Requirements

Bar Designation No.	Nominal Weight, lb/ft [Nominal Mass, kg/m]^A		Nominal Dimensions^B			Deformation Requirements, in. [mm]
	400 Series; Duplex Alloys	300 Series	Diameter, in. [mm]	Cross-Sectional Area, in.² [mm²]	Perimeter, in. [mm]	Maximum Average Spacing	Minimum Average Height	Maximum Gap per Side^C
	400 Series; Duplex Alloys	300 Series	Diameter, in. [mm]	Cross-Sectional Area, in.² [mm²]	Perimeter, in. [mm]	Maximum Average Spacing	Minimum Average Height	Two-Sided Bar	Three-Sided Bar
3 [10]	0.374 [0.556]	0.378 [0.562]	0.375 [9.5]	0.11 [71]	1.178 [29.9]	0.262 [6.7]	0.015 [0.38]	0.143 [3.6]	0.097 [2.5]
4 [13]	0.679 [1.011]	0.686 [1.021]	0.500 [12.7]	0.20 [129]	1.571 [39.9]	0.350 [8.9]	0.020 [0.51]	0.191 [4.9]	0.129 [3.3]
5 [16]	1.048 [1.559]	1.058 [1.575]	0.625 [15.9]	0.31 [199]	1.963 [49.9]	0.437 [11.1]	0.028 [0.71]	0.239 [6.1]	0.162 [4.1]
6 [19]	1.495 [2.225]	1.511 [2.248]	0.750 [19.1]	0.44 [284]	2.356 [59.8]	0.525 [13.3]	0.038 [0.97]	0.286 [7.3]	0.194 [4.9]
7 [22]	2.038 [3.032]	2.059 [3.064]	0.875 [22.2]	0.60 [367]	2.749 [69.8]	0.612 [15.5]	0.044 [1.12]	0.334 [8.5]	0.226 [5.8]
8 [25]	2.685 [3.995]	2.713 [4.037]	1.000 [25.4]	0.79 [510]	3.142 [79.8]	0.700 [17.8]	0.050 [1.27]	0.383 [9.7]	0.259 [6.6]
9 [29]	3.396 [5.053]	3.441 [5.106]	1.128 [28.7]	1.00 [645]	3.544 [90.0]	0.790 [20.1]	0.056 [1.42]	0.431 [10.9]	0.292 [7.4]
10 [32]	4.312 [6.416]	4.358 [6.484]	1.270 [32.3]	1.27 [819]	3.990 [101.3]	0.889 [22.6]	0.064 [1.63]	0.487 [12.4]	0.329 [8.3]
11 [36]	5.296 [7.880]	5.352 [7.964]	1.410 [35.8]	1.56 [1006]	4.430 [112.5]	0.987 [25.1]	0.071 [1.80]	0.540 [13.7]	0.365 [9.3]
14 [43]	7.64 [11.37]	7.72 [11.49]	1.693 [43.0]	2.25 [1452]	5.32 [135.1]	1.185 [30.1]	0.085 [2.16]	0.648 [16.5]	0.438 [11.1]
18 [57]	13.59 [20.22]	13.72 [20.43]	2.257 [57.3]	4.00 [2581]	7.09 [180.1]	1.58 [40.1]	0.102 [2.59]	0.864 [21.9]	0.584 [14.8]

(A) The 400 and Duplex-Alloy Series is based on a density of 489.59 lb/ft³ [7833.4 kg/m³]. The 300 Series is based on a density of 494.78 lb/ft³ [7916.5 kg/m³]. Density varies with alloy content which may result in a variation of several percent.

(B) The nominal dimensions of a deformed bar are equivalent to those of a round bar having the same weight [mass] per foot [metre] as the deformed bar.

(C) The maximum gap (measured as a chord) between the ends of the deformations shall not exceed 25 %/n of the nominal perimeter of the bar, where n is the number of longitudinal gaps or longitudinal ribs around the perimeter of the bar.

1.1.1 Supplementary requirement (S1) of an optional nature is provided. It shall apply only when specified by the purchaser. In order to obtain a controlled magnetic permeability product, steel conforming to Supplementary Requirement S1 should be ordered.

1.2 The chemical composition of the stainless steel alloy shall be selected for suitability to the application involved by agreement between the manufacturer and the purchaser. This is an important consideration in achieving the desired corrosion resistance or controlled magnetic permeability, or both, because these properties are not provided by all stainless steels.

Note 1: The alloys shown in Table 2 have found the most use in North America. Other alloys may also provide desired properties; consult with the manufacturer for stainless steel alloy properties and availability.

TABLE 2 Chemical Requirements of Typical Alloys^A

UNS Designation		Composition %
UNS Designation	Type	Carbon	Manganese	Phosphorus	Sulfur	Silicon	Chromium	Nickel	Molybdenum	Nitrogen
S24000	XM-29	0.08	11.50- 14.50	0.060	0.030	1.00	17.00- 19.00	2.25- 3.75	....	0.20- 0.40
S24100	XM-28	0.15	11.00- 14.00	0.060	0.030	1.00	16.50- 19.00	0.50- 2.50	....	0.20- 0.45
S30400	304	0.08	2.00	0.045	0.030	1.00	18.00- 20.00	8.00- 10.50	Status : Historical Standard Type: Main Document No: ASTM A955/A955M : 17a Document Year: 2017 Pages: 14 Edition: a Section Volume: 01.04 Volume 01.04 Steel--Structural, Reinforcing, Pressure Vessel, Railway ICS: 77.140.60 Steel bars and rods Preview Document Life Cycle Historical ASTM A955/A955M : 18 Historical ASTM A955/A955M : 18a Historical ASTM A955/A955M : 18b Historical ASTM A955/A955M : 19 Historical ASTM A955/A955M : 20 Historical ASTM A955/A955M : 20a Historical ASTM A955/A955M : 20b ACTIVE ASTM A955/A955M : 20c Currently Viewing Historical ASTM A955/A955M : 17a Historical ASTM A955/A955M : 17 Historical ASTM A955/A955M : 16a Historical ASTM A955/A955M : 16 Historical ASTM A955/A955M : 15 Historical ASTM A955/A955M : 14 Historical ASTM A955/A955M : 12e1 Historical ASTM A955/A955M : 12 Historical ASTM A955/A955M : 11 Historical ASTM A955/A955M : 11e1 Historical ASTM A955/A955M : 10a Historical ASTM A955/A955M : 10 Historical ASTM A955/A955M : 09b Historical ASTM A955/A955M : 09a Historical ASTM A955/A955M : 09 Historical ASTM A955/A955M : 07a Historical ASTM A955/A955M : 07 Historical ASTM A955/A955M : 06a Historical ASTM A955/A955M : 06 Historical ASTM A955/A955M : 05a Historical ASTM A955/A955M : 05 Historical ASTM A955/A955M : 04a Historical ASTM A955/A955M : 04ae1 Historical ASTM A955/A955M : 04 Historical ASTM A955/A955M : 03b Historical ASTM A955/A955M : 03a Historical ASTM A955/A955M : 03 Historical ASTM A955/A955M : 02 Historical ASTM A955/A955M : 01 Historical ASTM A955/A955M : 96 Knowledge Corner Expand Your Knowledge and Unlock Your Learning Potential - Your One-Stop Source for Information! The Corporate About BSB Edge Vision & Mission Our Journey - Milestones Our Clientele CSR Activities Contact Us Useful Links FAQ’s Privacy Policy Terms & Conditions Products & Services ASTM Book of Standards ASME BPVC 2023 ASME Boiler and Pressure Vessel Code - Revision Tracker with Synopsis (RTwS) eCatalogs / eBrochures Free Downloads Standards e-Pedia Standards By Publisher ACI Standards AFNOR Standards AIAG Standards API Standards ASHRAE Standards ASM Standards ASME Standards ASNT Standards ASTM Standards AWWA Standards Read More Connect With US Support Desk Customer Feedback News and Events © Copyright 2024 BSB Edge Private Limited. Add Standards To Trackedge To add “” to our tracker and get updates about it as and when it changes, kindly LOGIN, REGISTER or JUST ENTER YOUR EMAIL ID in below field so that we keep you informed about changes to the standards of your interest. This document is available for free download. Free documents cannot be added to the cart. Please download the Document using this link. Enquire now + Enquiry Form Full Name E-mail Address Phone Organisation Select Enquiry Type This Website Uses Cookies to Manage Services The BSB Edge Pvt. Ltd. takes your privacy very seriously and respects the importance of security on the internet. BSB Edge websites use cookies and similar technologies for various purposes including to distinguish you from other users of our websites. By continuing to use our websites, you agree to our cookie policy. What cookies do we use? Cookies are text files containing small amounts of information. They are downloaded to your computer or device when you visit a website. They don’t tell us who you are but they do enable us to recognise your device and where you have made various preferences or actions they enable us to remember them. Why do we use cookies? Cookies do lots of different jobs, like letting you navigate between web pages efficiently, remembering your preferences, and generally improving your experience of our websites. They can also help to ensure that adverts you see online are more relevant to you and your interests. Disabling cookies BSB Edge websites are designed to function optimally with cookies enabled. You can, however, disable cookies via your website browser settings. This may mean, however, that you may no longer have access to some of our website features. Please note that even with all cookies disabled, a tiny amount of information will continue to be retrieved from your web browser. This information is necessary for the basic functioning of our website. Contact us If you have any questions about our cookie policy you can contact us at: info@bsbedge.com

ASTM A955/A955M : 17a

Standard Details

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